:root {
  color-scheme: light;
  --navy: #1b2b4b;
  --navy-dark: #0f1c32;
  --navy-light: #2a3f63;
  --accent: #4a90d9;
  --accent-strong: #2563eb;
  --accent-soft: #e8f1fb;
  --background: #f5f7fa;
  --surface: #ffffff;
  --surface-alt: #f0f2f5;
  --surface-muted: #f8fafc;
  --ink: #1a1d21;
  --muted: #6b7280;
  --muted-soft: #9ca3af;
  --border: #e5e7eb;
  --divider: #f3f4f6;
  --success: #22c55e;
  --success-soft: #ecfdf5;
  --warning: #f59e0b;
  --warning-soft: #fffbeb;
  --danger: #ef4444;
  --danger-soft: #fef2f2;
  --info: #3b82f6;
  --info-soft: #eff6ff;
  --radius-lg: 28px;
  --radius-md: 22px;
  --radius-sm: 16px;
  --shadow-lg: 0 26px 70px rgba(15, 28, 50, 0.12);
  --shadow-md: 0 14px 34px rgba(15, 28, 50, 0.08);
  --content-width: 1120px;
  --reading-width: 820px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(74, 144, 217, 0.18), transparent 24%),
    radial-gradient(circle at top left, rgba(27, 43, 75, 0.08), transparent 28%),
    linear-gradient(180deg, #fbfdff, var(--background));
}

a {
  color: var(--accent-strong);
}

img {
  max-width: 100%;
  display: block;
}

.site-body {
  padding: 24px;
}

.app-shell {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.surface-card,
.site-header,
.site-footer {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(229, 231, 235, 0.95);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(14px);
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  background:
    linear-gradient(135deg, var(--navy-light), var(--navy-dark));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 12px 24px rgba(27, 43, 75, 0.24);
}

.brand-copy {
  min-width: 0;
}

.brand-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--navy);
}

.brand-subtitle {
  margin: 2px 0 0;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--navy);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 700;
  transition:
    background-color 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-strong);
  transform: translateY(-1px);
}

.site-nav a[aria-current="page"] {
  background: var(--navy);
  color: #fff;
}

.site-nav a[aria-current="page"]:hover,
.site-nav a[aria-current="page"]:focus-visible {
  background: var(--navy);
  color: #fff;
}

.hero-card,
.content-card,
.site-footer {
  padding: clamp(22px, 4vw, 40px);
}

.hero-card {
  display: grid;
  gap: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  color: var(--navy);
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

h2 {
  color: var(--navy);
  font-size: clamp(1.28rem, 2.4vw, 1.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h3 {
  color: var(--navy);
  font-size: 1.04rem;
  line-height: 1.35;
}

p,
li {
  color: var(--muted);
  line-height: 1.72;
}

strong {
  color: var(--ink);
}

.updated,
.lead {
  color: var(--muted);
}

.lead {
  max-width: 62ch;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
}

.hero-meta,
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 700;
}

.meta-chip.info {
  background: var(--info-soft);
  color: var(--info);
}

.meta-chip.success {
  background: var(--success-soft);
  color: var(--success);
}

.meta-chip.warning {
  background: var(--warning-soft);
  color: var(--warning);
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.feature-card,
.summary-card,
.section-panel,
.toc-card,
.contact-card,
.channel-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.feature-card,
.summary-card,
.section-panel,
.toc-card,
.contact-card,
.channel-card {
  padding: 22px;
}

.feature-card {
  display: grid;
  gap: 14px;
}

.feature-card p {
  min-height: 3.4em;
}

.button-row,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button,
.button-secondary,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background-color 0.18s ease;
}

.button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  box-shadow: 0 14px 24px rgba(37, 99, 235, 0.2);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 28px rgba(37, 99, 235, 0.24);
}

.button-secondary {
  background: var(--surface-alt);
  color: var(--navy);
  border: 1px solid var(--border);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  transform: translateY(-1px);
}

.text-link {
  min-height: auto;
  padding: 0;
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.mail-link {
  font-weight: 700;
}

.legal-layout {
  display: grid;
  gap: 18px;
}

.legal-shell {
  width: min(100%, var(--reading-width));
  display: grid;
  gap: 18px;
}

.toc-card {
  position: sticky;
  top: 104px;
  align-self: start;
}

.toc-title {
  margin-bottom: 10px;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.toc-list {
  display: grid;
  gap: 6px;
}

.toc-list a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--navy);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
}

.toc-list a:hover,
.toc-list a:focus-visible {
  background: var(--surface-alt);
  color: var(--accent-strong);
}

.summary-card,
.contact-card,
.channel-card {
  display: grid;
  gap: 10px;
  background:
    linear-gradient(180deg, rgba(232, 241, 251, 0.7), rgba(255, 255, 255, 0.94));
}

.summary-card ul,
.section-panel ul,
.contact-card ul,
.channel-card ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.summary-card p + ul,
.contact-card p + ul,
.channel-card p + ul {
  margin-top: 10px;
}

.legal-stack {
  display: grid;
  gap: 16px;
}

.section-panel {
  display: grid;
  gap: 12px;
  scroll-margin-top: 112px;
}

.section-panel h3 {
  margin-top: 4px;
}

.site-footer {
  display: grid;
  gap: 12px;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links a {
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent-strong);
}

.status-note {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(59, 130, 246, 0.16);
  background: var(--info-soft);
  color: var(--info);
  font-size: 0.94rem;
  font-weight: 600;
}

.page-404 {
  display: grid;
  place-items: center;
  padding: 24px;
}

.error-card {
  width: min(100%, 760px);
  text-align: center;
  display: grid;
  gap: 16px;
}

.error-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 92px;
  height: 92px;
  margin: 0 auto;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  box-shadow: 0 20px 36px rgba(15, 28, 50, 0.24);
}

@media (min-width: 960px) {
  .legal-layout {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 300px);
    align-items: start;
  }

  .legal-layout .legal-shell {
    order: 1;
  }

  .legal-layout .toc-card {
    order: 2;
  }
}

@media (max-width: 959px) {
  .toc-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-body,
  .page-404 {
    padding: 14px;
  }

  .site-header {
    position: static;
    padding: 14px;
    border-radius: var(--radius-md);
  }

  .brand-mark {
    width: 46px;
    height: 46px;
    border-radius: 14px;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .site-nav a {
    min-height: 38px;
    padding: 0 12px;
    font-size: 0.9rem;
  }

  .hero-card,
  .content-card,
  .site-footer {
    padding: 20px;
    border-radius: var(--radius-md);
  }

  .feature-card,
  .summary-card,
  .section-panel,
  .toc-card,
  .contact-card,
  .channel-card {
    padding: 18px;
    border-radius: var(--radius-sm);
  }

  .footer-row {
    align-items: flex-start;
    flex-direction: column;
  }
}